Question

For each of the following, answer True or False. Justify your answer! Acceleration can only change...

For each of the following, answer True or False. Justify your answer!


Acceleration can only change the speed of an object.


If an object is moving in the x-direction but not the y-direction at one moment in time, then it will never be able to move in the y-direction.


A projectile accelerates only in the vertical direction.


Conservation of momentum can be applied along both axes in a collision.


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Homework Answers

Answer #1

Accelaration can change the direction of motion of a body also

so the statement Acceleration can only change the speed of an object is False


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after some time t sec,the body may have a two dimensional motion

so the given statement 2 is FAlse

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since gravitational Force is along vertical direction,hence statement 3 is True

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momentum conserves in all directions
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hence the given statement 4 is TRue

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